The largest offshore wind farm to date has officially opened off of the Cumbrian coast in the Irish Sea and it has the ability to power 590,000 homes. The 659-megawatt Walney Extension takes up an area roughly the size of 20,000 soccer pitches and is made of 87 wind turbines.
from https://www.engadget.com/2018/09/07/largest-offshore-wind-farm-opens-england/
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